CVE-2025-2017: Ashlar Cobalt

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Ashlar-Vellum Cobalt CO File Parsing Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of CO files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25240.

Affected products

• Ashlar Cobalt: version 12.0.1204.91 only

Published 2025-03-11. Last modified 2026-06-17.